When I was in hospital a couple of months ago for an operation they asked me what blood type I was and I said I hadn't a clue. They're like "what do you mean you don't know? You have to know". Well, nobody ever told me. So a few days later one of the nurses I had become friendly with told me I was whatever it was. I can't even remember what she said. I think it's AB but I don't know if it's positive or negative.